body mass index (BMI) in children aged 6-11 years old. Generally, girls tend to prefer a thinner body while boys prefer a larger body. Dissatisfaction with the body increases with age as adolescents become more aware of social-prescribed ideals of the body and are more vulnerable to comparison with peers (Dion et al., 2016; Ricciardelli & McCabe, 2001). The relationship of body image with BMI is particularly alarming as the prevalence of overweight and obesity in children (7-9 years old) is as high as 31.5% (Padez, Fernandes, Mourão, Moreira, & Rosado, 2004). In addition, in a study conducted with Portuguese children (7-10 years old), BMI predicted 25.6% in boys and 30.8% girls' dissatisfaction with their body shape (Coelho, Padez, Moreira, Rosado, & Mourao-Carvalha, 2013). Duchin et al. (2014) further confirmed BMI as the strongest predictor of body image dissatisfaction of 5-12-year-olds; in addition, body image dissatisfaction may have a long-term negative effect as it significantly influenced further weight gain